2014 TOYOTA SIENNA ECU

137
1-3. Adjustable components (s
eats, mirrors, steering wheel)
1
Before driving
SIENNA_OM_OM45483U_(U)
CAUTION
■When using the third center seat belt
■ Using a seat belt extender
●Do not wear the seat belt extender if you can fasten the seat belt without
the extender.
● Do not use the seat belt extender when installing a child restraint system
because the belt will not securely hold the child restraint system, increas-
ing the risk of death or serious injury in the event of an accident.
● The personalized extender may not be safe on another vehicle, when
used by another person, or at a different seating position other than the
one originally intended.
NOTICE
■When using a seat belt extender
When releasing the seat belt, press on the buckle release button on the
extender, not on the seat belt.
This helps prevent damage to the vehicle interior and the extender itself.
Do not use the third center seat belt with
either buckle released. Fastening only
one of the buckles may result in death or
serious injury in case of sudden braking
or a collision.

138
1-3. Adjustable components (seats, mirrors, steering wheel)
SIENNA_OM_OM45483U_(U)
Steering wheel
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an acci-
dent, resulting in death or serious injury.
■ After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an
accident and resulting in death or serious injury.
The steering wheel can be adjust ed to a comfortable position.
Hold the steering wheel and
press the lever down.
Adjust to the ideal position by
moving the steering wheel
horizontally and vertically.
After adjustment, pull the lever
up to secure the steering
wheel.
STEP1
STEP2

159
1-5. Refueling
1
Before driving
SIENNA_OM_OM45483U_(U)
CAUTION
■
When refueling
Securely insert the fuel nozzle into the fuel filler neck. If fuel is added with
the nozzle slightly lifted away from the fuel filler neck, the automatic shut off
function may not operate, resulting in fuel overflowing from the tank.
■ When replacing the fuel cap
Do not use anything but a genuine Toyota fuel tank cap designed for your
vehicle. Doing so may cause a fire or other incident which may result in
death or serious injury.
NOTICE
■Refueling
Do not spill fuel during refueling.
Doing so may damage the vehicle, such as causing the emission control
systems to operate abnormally or damaging fuel system components or the
vehicle’s painted surface.

161
1-6. Theft deterrent system
1
Before driving
SIENNA_OM_OM45483U_(U)
■
System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■ Conditions that may cause the system to malfunction
● If the grip portion of the key is in contact with a metallic object
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
■ Certifications for the engine immobilizer system
U.S.A.
Vehicles without a smart key system
FCC ID: WRKRI-34BTY
Vehicles with a smart key system
FCC ID: NI4TMIMB-1
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Canada
This device complies with Industry Canada licence-exempt RSS stan-
dard(s). Operation is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any interfer-
ence, including interference that may cause undesired operation of the
device.

172 1-7. Safety information
SIENNA_OM_OM45483U_(U)
Airbag system componentsFront passenger airbag
Curtain shield airbags
Side airbags
Front passenger occupant
classification system (ECU
and sensors)
Side impact sensors (rear)
Front passenger’s seat belt
buckle switch
SRS warning light
Driver airbag Side impact sensors (front
door)
Driver’s seat belt buckle
switch
Driver’s seat position sen-
sor
Driver’s knee airbag
Front impact sensors
Airbag sensor assembly
“AIR BAG ON” and “AIR
BAG OFF” indicator lights
Seat belt pretensioners

173
1-7. Safety information
1
Before driving
SIENNA_OM_OM45483U_(U)
Your vehicle is equipped with
ADVANCED AIRBAGS designed based
on the US motor vehicle safety standards (FMVSS208). The airbag
sensor assembly (ECU) controls ai rbag deployment based on infor-
mation obtained from the sensors etc. shown in the system compo-
nents diagram above. This inform ation includes crash severity and
occupant information. As the air bags deploy, a chemical reaction in
the inflators quickly fills the airbags with nontoxic gas to help restrain
the motion of the occupants.

180 1-7. Safety information
SIENNA_OM_OM45483U_(U)
CAUTION
■SRS airbag precautions
●The SRS front passenger airbag also deploys with considerable force, and
can cause death or serious injury especially if the front passenger is very
close to the airbag. The front passenger seat should be as far from the air-
bag as possible with the seatback adjusted, so the front passenger sits
upright.
● Improperly seated and/or restrained in fants and children can be killed or
seriously injured by a deploying airbag. An infant or child who is too small
to use a seat belt should be properly secured using a child restraint sys-
tem. Toyota strongly recommends that all infants and children be placed in
the rear seats of the vehicle and properly restrained. The rear seats are
safer for infants and children than the front passenger seat. ( P.191)
●If the seat belt extender has been con-
nected to the front seat belt buckles but
the seat belt extender has not also
been fastened to the latch plate of the
seat belt, the SRS front airbag will
judge that the driver and front passen-
ger are wearing the seat belt even
though the seat belt has not been con-
nected. In this case, the SRS front air-
bags may not activate correctly in a
collision, resulting in death or serious
injury in the event of collision. Be sure
to wear the seat belt with the seat belt
extender.

194 1-7. Safety information
SIENNA_OM_OM45483U_(U)
CAUTION
■Child restraint precautions
●Do not use the seat belt extender when installing a child restraint system
on the front or rear passenger seat. If installing a child restraint system
with the seat belt extender connected to the seat belt, the seat belt will not
securely hold the child restraint system, which could cause death or seri-
ous injury to the child or other passengers in the event of a sudden stop,
sudden swerve or an accident.
● Do not allow the child to lean his/her head or any part of his/her body
against the side door or the area of the seat, front and side pillars or roof
side rail from which the SRS side airbags or curtain shield airbags deploy
even if the child is seated in the child restraint system. It is dangerous if
the SRS side airbags and curtain shield airbags inflate, and the impact
could cause death or serious injury to the child.
● Make sure you have complied with all installation instructions provided by
the child restraint manufacturer and that the system is properly secured. If
it is not secured properly, it may cause death or serious injury to the child
in the event of a sudden stop, sudden swerve or an accident.